Edge burnishing machine



Dec. 4, 15134. F. B. KEALL ET AL 71,932,740

I EDGE BURNISHING MACHINE Filed July 17, 1951 2 Sheets-Sheet l //VVE/VTUNE,

.4,1934. F. B. KEALL EAL ,98

EDGE BURNISHING MACHINE Filed July 17, 1951' 2 Sheets-Shet 2 66 5046 a\Q 64 I A. I 553x63). 52 78 5 0 Patented Dec. 4, 1934 1,982,740 1 EDGEBURNISHING MACHINE Frank Bycroft Keall and Charles Turner Jones,

Leicester, England,

assignors tcUnited Shoe Machinery Corporation,

Paterson, N. J., a corporation of New Jersey 1 Application July 11,1931, Serial No. 551,466

In Great Britain July at, 1930 y 12 Claims.

' This invention relates to shoe finishing machines and is illustratedherein as embodied in an edge setting device adapted for useinconnection with an automatic edge setting-machine of'the type 5disclosed in United States Letters Patent No.

1,693,634, granted December 4, 1928, on application of Barclay andKeall. 1

In many shoes the edges of the sole at the shank are disposed atdilferent angles to the tread face thereof ateither side of the shank;that is, at the outer side of the shank the sole edge is usuallystraight heightwise thereof and approximately at right angles to thetread surface of the sole, and at the inner edge of the shank the edgeof the sole is usually oblique to the tread surface of the sole andsomewhat curved height wise thereof. It is therefore desirable infinishing shoes of the above type to use a multi-faced'tool, such forexample as one of the type disclosed in United States Letters Patent No.1,685,368, granted September 25, 1928, on application of T. Lund,which'tool has'work engaging surfaces adapted for operatingon both theouter and inner sole edges of shoes of the above type. I.

It is desirable, furthermore, that a sole edge may be presented toeither of the work engaging faces of a tool of the above type insubstantially the same position, and to this end various devices havebeen madefor effecting amovement of a tool holder for such a toolbetween two operative positions so that either of the work engagingfaces of the tool may be brought into operative position. In view of theforegoing, a feature of the invention consists in the provision in aburnishing machine of a tool carrier, a tool holder mounted for movementin said carrier betweentwo operative positions, and means mounted forreciprocation constructed and arranged both to move said holder betweenand to hold it in its two operative positions.

Considered in another aspect, invention is'to be recognized inmounting'the above-mentioned means for moving the holder between itsoperative positions in the carrier so as to havedriving engagement withthe holder substantially at the axis of oscillation of the carrier,whereby the difficulty of providing operating connections with theholder turningmeans owing to the oscillating movement of the latter isminimized. For the sake of convenience to the operator, it has beenfound desirable to have the tool holder so mounted that it not only canbe moved between two operative positions as pointed out above but alsois r normally held in one of its operative positions,

which has been termed herein the normal operative position, and isautomatically returned thereto from the other operative position.

Accordingly, another feature ofv the invention consists in the provisionof means arranged yieldingly to act upon the bar, thereby to cause theholder which is controlled by the bar to be held in its normal operativeposition. The limits of movement of the above-mentioned bar whichcorrespond to the operative positions of the tool holder are determinedby means .for operating the bar having a predetermined limited movement.Thus, when the bar is held at either limit of its movement by either theoperator or the above-mentioned yielding means, the tool holderis heldin one or the other of its operative positions. Prefer ably gearconnections'are provided between the tool holder and the bar, the holderhaving gear teeth arranged for meshing engagement with teeth on the bar,herein shown as a rack bar. These and other featuresof the invention aredescribed in the following specification and are illustrated in theaccompanying drawings, in which Fig. 1 is an elevation showing onemachine in 0 which the invention is embodied,

Fig. 2 is a plan view of a part of the machine illustrated in Fig. l,and i Fig. 3 is a sectional elevation of'the structure shown in Fig.2. l

The saidautomatic edge setting machine will be assumed to be of he typedisclosed in the specification of the Barclay and Keall Patent No;1,693,634 mentioned'above, and the frame l0'of this machine, which isoblong in plan and has its longer dimension running from right to leftof the operator, has bolted to it on its right-hand front corner abracket 12 on the top of which is secured a column 14 bearing at itsupper end a frame member or head 16 carrying the shank edge settingmechanism forming the subject-matter of the present invention. Thebracket 12 has at its lower end, extending from it toward the right andrearwardly of the automatic machine, a platform 18, about one foot fromthe floor, on which is mounted an electric motor 20 for driving theshank edge setting mechanism. The shank setting mechanism may, however,be driven by belt and pulleys from the driving shaft of the automaticedge setting machine. v

The shank edge setting mechanism comprises a single edge setting tool 22which is formed with two work engaging surfaces. These surfaces arerespectively formed to operate on a square edge and. a rounded edge of asole at the-shank, the 1 holder 26- is bored axially axis of tool beingtherefore similar to th at shown in F1 jbgflethaengufirlild tPaltent No.1,685,368 referred t o e 22 may be turn angle of 180 degrees about a edthrough an shank 24) extending, perpendicularly to the The holder 26"which carries the shank edge setting tool 22 is tapered and split at itslower 1 end and-has on it a'sleeve 28in threaded engagement with athreadedportion: 30 of the holder 26 abovethe tapered portion- Thesleeve 28 at its lower end has an internally; tapered portioncorresponding to the tapered portion of the holder 26;,and: the sleeve28* has clamped on it a hand lever 32'by which the sleeve may be rotatedand, by reason-of: the" threaded portions, moved endw ise on thespindle; to cause, through the co-opcrating tapered portions, the lowersplit end of i the'h'older to clamp-the shank of the tool in the boredend of the holder. The holder" 26 and sleeve-28ers"rotatably mounted ina carrier 34 which has extending integrally from it a horizontal carriershank 36 rotatably mounted in the l frame 16 of the shank edge settingmechanism.

Theqaxis of the carrier shank .36" and the tool holder axis are parallelwhen viewed from above". The carrier 34 isigashed at its frontto'receive'and supportthe hand lever 32. The upper endof the to receivea ball 38 which isengaged by the lower end of an upwardly extending rod40. The rod 40 is'slidingly mounted in. the frame 16 of the mechanismandis pressed: downwardly by an adjustable spring42 in theframe. thecarrier and its horizontal shank are-allsubstantially similar to thecorresponding parts disclosed in United States Letters Patent No.979,249, granted December 20, 1910', on application of Arthur: Bates,and the spring arrangement allows the edge cutting tool to yieldslightly under the pressure of the work against it.

v The carrier shank. 36 has fixed on its rear end abearing member a4 andthe bearing member has fixed in its rear end a short shaft 46, in axialal-inement with the carrier shank 36, which is rotatably mounted in theframe 16 of the edge setting mechanism. The bearing member 44 has,rotatably mounted in it a swivel member 48- the which extendsvertically at right angles an angleof about- This rod and springarrangement and 48. The driving shaft 5ihas f1xed to it a pulley 56which is driven from the electric motor 20 or from the driving shaft. ofthe automatic: edger setting; machine. When. the driving. shaft 54isrotated the, tool.,22 is oscillated about the axis. of the carriershank 36; the'mechanism for oscillating the'tool being substantiallysimilar to the mechanism and operating in the same manner asthatdescribed, in United States Letters Patent No. 1,035,445,.granted August13-, 1912;.on application of A. E. Jerram.

The edge setting tool holder 26 has: formed around it gear teeth 58(Fig. 3)- which mesh with Y rack teeth 60 formed on the forward end ofahorizontal'bar 62 extending through the carrier shank 36 and short shaft46 coaxially therewith. The rear end of the bar 62 has on it a groovedcollar 64 within the groove of which is received 1 a pin 66 extendingfrom one arm 68 of a bellcrank. lever 70' pivoted on. the frame 16. ofthe shank edge setting, mechanism. The other arm of the bell-crank lever70 is connected to. a

treadle 72. pivotedon the bracket 12- by means of a treadle rod 74, andstop screws 76, 7.8-. on the bell-cranklever engage stop" faceson theframe; 16 to limit the movement of the bellcrank lever in bothdirections and hence position the tool holder in both its normal andalternative operative positions. A spring abutting the collar 64- andthe frame 16'. constantly urges the toolholder toward its normaloperative position and: normally holds the stop screw 76 againstits stopface. When the treadle: is depressed thetool holder 26. and the tool 22are rotated to their alternative operative position. The stops 76 and 78are so adjusted that'the holder can be rotated through degrees, theangle between the work engaging faces of the illustrated tool. The tool,as has been stated, has two edge setting surfaces, one for operating onsquare edges and the other on rounded edges. One of these surfaces isnormallyheldin the operative position and by' depressing the. treadleand holding it depressed the other surface may, by rotation of the toolabout the axis of its shank, be brought into the operative. position andheld there. If the tool has associated with its square edge surface astitch wheel therounded 1 surface is positioned about half an' inchbelow the level of the square surface so that when Having thus describedour invention what we claim as new and desire to secure by LettersPatent of the United States is:

1. In an edge burnishing machine, a. tool: car.-

' rier, a tool holder mounted for movement in said carrier between anormal and another operative position, a slide mounted in said carrierfor moving said holder between its operative positions, and means actingupon said slide for yieldingly resisting the movement of the holder fromits normal position and for causing the slide to return said holder toits normal operative position from its said other operative position.

2. In an edge burnishing machine, an oscillating tool carrier, a toolholder rotatably supported in said carrier, and means supported by saidcarrier for turning said holder adapted for engagement with the holdersubstantially at the axis of oscillation of the carrier.

3. In a burnishing machine, a tool carrier having a shank, a tool holdermounted to rotate in said carrier between a normal and an alternativeoperative position, a movable bar arranged to rotate said holder, aspring acting upon said bar thereby to urge said holder toward itsnormal operative position, and means for operating said bar havinglimited movement in opposite directions whereby the holder is positioneddefinitely in both its normal and alternative operative positions.

4. In an edge burnishing machine, an oscillating tool carrier, a toolholder mounted for movement in said carrier between two operativepositions, and means connected to said holder substantially at the axisof oscillation of the carrier constructed and arranged both to move saidholder between and to hold it in its two operative positions.

5. In an edge burnishing machine, an oscillating tool carrier, a toolholder rotatably supported in said carrier, a bar disposed substantiallycoaxially with respect to the axis of oscillation of the carrier andoperatively connected to said holder, and operator-controlled mechanismfor operating said bar thereby to cause a movement of said holderbetween two operative positions.

6. In an edge burnishing machine, a tool carrier, a tool holder mountedfor movement in said carrier between two operative positions, and a barhaving driving engagement with said holder constructed and arranged tomove said holder between and hold it in its operative positions.

'7. In an edge burnishing machine, an oscillating tool carrier, a toolholder rotatably supported in said carrier, a bar operatively connectedto said holder, and means for operating said bar substantially in thedirection of the axis of oscillation of the tool carrier to cause amovement of said holder between two operative positions.

8. In an edge burnishing machine, a tool carrier havinga shank, a toolholder rotatably supported in said carrier, a bar disposed in said shankand operatively connected with said holder, yielding means acting uponsaid bar to cause said holder to be held in one operative position, andmeans for operating said bar toa predetermined extent thereby to causethe tool holder to be moved to another operative position.

9. In an edge burnishing machine, a tool carrier, a tool holderrotatably mounted in said carrier, a rack bar supported by said carrierand disposed in meshing engagement with said tool holder, and means foroperating said rack bar having a predetermined limited movement wherebysaid rack bar is caused to hold said holder in its operative positions.

10. In an edge burnishing machine, a tool carrier, a tool holderrotatably mounted in said carrier and having peripheral gear teeth, arack bar meshing with the teeth on said holder, yielding means normallyurging said rack bar to move said holder toward one operative position,and means for operating said rack bar to move said holder between thefirst-mentioned operative position and another operative'positionconstructed and arranged also to limit the movement of the rack barwhereby the holder is positioned in either of its operative positions.

11. In an edge burnishing machine, a tool carrier, a tool holderrotatably mounted in said carrier, a rack bar engaging said holder forrotating it between two operative positions, yielding means urging saidrack bar to cause said holder to be rotated normally toward one of itsoperative positions, a crank for operating said rack bar, and means onsaid crank for limiting its movement whereby the movement of said holderin one direction is arrested when it is at either of its operativepositions.

12. In an edge burnishing machine, a tool carrier, a tool holderrotatably mounted in said carrier, a rack bar engaging said holder forpositioning it in either of two operative positions, yielding meansnormally urging said rack bar to cause said holder to be rotated towardone of its operative positions, a crank for operating said rack bar,means on said crank for limiting its movement whereby the movement ofsaid holder in one di rection is arrested when it is in either of itsoperative positions, and treadle mechanism for operating said crank.

FRANK BYCROFT KEALL. CHARLES TURNER JONES.

